Electrohydraulic controller.



6. EN GBERG. BLEGTBOHYDRAULIG CONTROLLER.

APPLIOATION FILED NOV. 9, 1912.

Patented Jan. 6, 1914.

2 sums-3mm 1.

WITNESSES [ryZer A TTOR/VEYS c. ENGBERG.

"3 s Q "T '4 x [11 E \a l 2 3 2 a r I "v t- PL a l a WITNESSES INVENTOR Patented Jan 6, 1914.

2 aunts-81mm: 2.

UNITED STATES PATENT 01113 161 3.

'GABL ENGZBERG, OF ST. JOSEPH, MICHI EGAN, ASSIGNOB TO ENGBERGS ELECTRIC AND MECHANICAL WORKS, .013 ST. JOSEPH, MIGHIGAN.

ELECTBOHYDBAULIC CONTROLLER.

Specification of Letters Patent.

Application filed November 9, 1912. Serial Ro. 780,385.

- To all whom it may concern:

Be it known that I, CARL Euonnnc, a citizen of the United States, and a resident of St. Joseph,'in the county of Berrien and State of Michigan, have invented a new and Improved Electrohydraulic Controller, of which the following is a full, clear, and

.exact description.

This invention relates to an electro-hydraulic controller of new and improved construction.

- trolle puppets.

The invention comprises a system of valves particularly related with respect to certain chambers, with electric means for controlling the valves, whereby the fluid may pass indifferent directions at will through the different chambers, a common outlet being provided.

The principal object of the invention is to provide an electro-hydraulic controller characterized by a plurality of valve-controlled chambers, whereb fluidmay be passed at will in different d1rections therethrough, the operation of the valves being eflected throu h the medium of electrically-con- Reference is to be had to the accompanying drawings, forming part of this specification', in which similar characters of reference denote corresponding parts in all the views, and in which-- Figure 1 is a front view, partly sectional, along the.line'11; Fig. 2 is a vertical sectional view on the line, 2-2; Fig.3 is a horizontal sectional view on the line 3-3; while Fig. 4 is a vertical sectional view on the The subject-matter herein described and claimed comprises a chambered bod member .1 provided with a plurality o valves which control the passage of fluid through the chambers, the operatlng means comprising electro -magnets 2, carried 1n suitable I frames 3 which maybe positioned on top of the body member 1, if so desired, the electro-magnets being inclosed or protected by means of removable covers 4.

The controller is especially designed for use with hydraulic cylinders wherein the admission of the fluid to either end of the cylinder is eifected through the medium of.

the controller, the discharge from the opposite end of the cylinder passing through the controller and leaving through an outlet.

Referring particularly to Fig. 3, the

threaded opening 5 communicates with one end of the hydraulic cylinder, while the threaded 0 ening other end t ereof.

Referring particularly to Figs. '1 and 1, the threaded inlet 7 communicates with the source of fluid supply, "while the threaded outlet 8 is the common dischar e. The structure which carries these threaded openings has been designated as a body member 1.

Within the upper part of this body member 1 is an inlet chamber 9 to which the inlet 7 leads, which inlet conveys the fluid from the source of supply, as previously mentioned, there being valves 10 adjacent the ends of this chamber, the valves reciprocating in suitable recesses or pockets 11. Each valve is mounted on a suitable spindle 12, the valve being preferably between the ends of the spindle, and each is provided with a small passageway 10 passing therethrough.

Patented Jan. 6, 1914..

6 communicates with the The bottom of the body member .1 contains lower end of the right valve 10 of Fig. 1- position shown in when the valve is in the this figure.

It will be noted that the lower ends of the spindles 12am provided with secondary valves 20, reciprocating in seats 23; the

secondary'valve 20 on the-right spindle 12 of Fig. 1 is designed-to" open and close the port 19 between the auxiliary chamber 16 and thedischarge chamber 15. The auxiliarychamber 17, within the body member,

communicates with the threaded outlet- 5..

through the port 21, this chamber also coinmunicating with: the chamber 15 through the port 22, adjacent the left valve of Fig.1, communication, however, being. prevented when the valves are in the position shown in this figure.

When the'outlets 5 and ii are in communication with the opposite ends of a hydraulie cylinder, the cylinderand the pipes being filled with the fluid and the inlet 7 being in communication with the source of supply, it is obvious that pressure is present on both sides of the valves 10 so that the valves 10, if closed, will remain in equilibrium because of the equalization of pressures.

Referring now to Fig. 2, it will be noted that one side of the body member 1 is provided with a vertically extending passageway 24, which communicates with the chamber 15 adjacent the bottom of the body member and also with the recess or pocket 11 adjaccnt the top; there are two of these passageways 24;, one to each of the valves 10, which passageways house a spindle 25 having a puppet 26 adjacent its upper end, adapted to close the top of the passageway, the lower end of the spindle extending without the body member through a suitable opening therein and being in pivotal engagement at 26 with the lower endof an arm 27; within the housing or frame 3 which contains the electro-magnet 2 is a lever 28 pivotally mounted at one end on a pin 29, the arm 27 being suitably secured to the outer end of this lever. There are two levers 28 and two arms 27 since there are two puppets 26, it being noted that the pivotally mounted levers 28 are adjacent the lower ends of the cores of the electro-magnets 2. In order to prevent leakage from the chamber 15, the lower end of the spindle 25 carries a gasket 30, the peripheral portions of which are maintained in firm engagement with the body member in any suitable manner, as by means of a ring 31. r The diameter of the passageway 10 through the valve 10 is less than that of the passageway-24 controlled by the puppet 26; aspreviously mentioned, the

ressures on opposite sides ofthe valves 19 being equal, these valves are stalled; if, now, the right hand eleetro-magnet2 of Fig. 1 is energized, the pivoted lever 28 will be moved upwardly about its support 29, the arm 27 moving the spindle 25 upwardly and carry- ;ing. the puppet 26 with it, thereby placing the chamber 15 in communication with the recess or pocket 11. Due to the difference in diameters of the passageways 10 and 2-1 there is a larger discharge through the passageway 24: thanthrough the passageway 10, and the pressures of the fluid within theinlet chamber 9 which enters through the inlet 7 will lift the right hand valve 10 -(3 and passing through the port 18 into the chamber 16, whence it travels through the port 19 into the discharge 'chamber 15, leaving the controller through the discharge outlet 8. 1f the electro-magnet 2, at the right of Fig. 1, is now deenergized, the pocket or recess 11 is no longer in communication with the recess 15, and the valve 10 will close, coming into the position shown for the Valve 10 at the left of Fig. 1, due to the above mentioned difi erence in the diameters of the passageways 10 and 24; the hydraulic cylinder is now out of communication with the source of supply, due to the fact that the passageway between the chamber 9 and the outlet 5 is closed. If the other eledtro-magnet 2 is energized, the same operation of this second valve 10 will be gone through, in this case, however, the fluid leaving the inlet chamber 9 andpassing to the other end of the hydraulic cylinder, through the outlet 6; the fluid behind the piston in this cylinder enters the hydraulic controller through the threaded outlet 5 and passes through the port 21 into the recess 17, finally coming into the chamber 15 through the port 22, leaving the controller through the common outlet 8. To return this second valvelO to normal position, the magnet 2 is deenergized. The frame 3 is preferably provided with binding posts 100, wherebythe source of current may be led to the electro-magnets. It will be clear, from the description in connection with the accompanying drawings, that a unitary outfit is provided, adapted to be electrically operated, whereby either end of a hydraulic cylinder or eimilar structure may be placed in communication with a source of fluid, the fluid discharged from the other end of the cylinder or equivalent de vice leaving the controller through the common outletl While a particular and specific arrangement of all parts is shown in the drawings, it is, of course, clear that the size and shape of the parts and their relative arrangement, as well as the material of which they are made, may be widely Varied without departin from the inventive idea disclosed.

aving thus described my invention, I claim as'new, and desire to secure by Letters Patent 1. In a valve mechanism, a casing, a common inlet chamber within said casing, an outlet at each end of said casing and having communication with said common-c inlet chamber, a main valve at each end of said inlet chamber for controlling the flow of fluid between said inlet chamber and its individual outlet, a common discharge chamber, means connecting said common discharge chamber with each of said outlets, and an auxiliary valve connected to and movable with each of said main valves for controlling communication between said discharge, chamber and said outlets, the movement of one of said main valves to cut off communication between one of said outlets and said inlet chamber serving to cut off communication between the other outlet and said common discharge chamber.

2. In a valve mechanism, a casing, a common inlet chamber within saidcasing, a common discharge chamber, a pair of outlets, each of said outlets having communication with said inlet chamber and with said discharge chamber, a pair of main valves disposed within said casing, an auxiliary valve connected to the valve stem of each of said main valves, the movement of one of said main valves serving to cut off communication between one of said outlets and said common inlet chamber, and the movement of the auxiliary valve on the same valve stem serving to cut ofl' communication between the other of said outlets and said common discharge chamber.

3. In a valve mechanism, a casing, a common inlet chamber within said casing, a common discharge chamber, a pair of outlets, each of said outlets having communication with said inlet chamber and. with said discharge chamber, a pair of main valves disposed within said casing, an auxiliary valve connectedto the valve stem of each of said main valves, the movement of one of said main valves serving to cut otf communication between one of said outlets and said common inlet chamber, the movement of the auxiliary valve on the same valve stem serving to cut off communication between the other of said outlets and said. common discharge chamber, andmeans for independently actuating said main valves.

4. A valve casing comprising a common inlet chamber having a recess, a common discharge chamber, a pair of outlets each communicating with said inlet and said discharge chambers, a main valve for controlling the flow of fluid between said outlet and said common inlet chamber, said main valve being slidably disposed in said recess, an

auxiliary valve connected to and movable With said main valve for controlling the flow of fluid from the other of said outlets to said common discharge chamber, said main valve having an openlng communicating with said.

and means for controlling the flow of fluid through said latter passage.

5. A valve casing comprising a common inlet chamber having a recess, a common discharge chamber, a pair of outlets. each communicating with said inlet and said discharge chambers, a main valve for controlling the flow of fluid between said outlet and said common inlet chamber, said main valve being slidably disposed in said recess, an auxiliary valve connected to and movable with said main valve for controlling the flow of fluid from the other of said outlets to said common discharge chamber, said main valve having an opening communicating with said main inlet chamber on one side of the valve and with the recess on the opposite side of the valve, a passage of larger diameter for establishing communication between said recess and said common discharge chamber, means for controlling the flow of fluid through said latter passage, said last named means comprising a puppet valve, and means for actuating said puppet valve.

6. A valve casing comprising a common inlet chamber having a recess, a common discharge chamber, a pair of outlets each communicating with said inlet and said discharge chambers, a main valve for controlling the flow of fluid between said outlet and said common inlet chamber, said main valve being slidably disposed in said recess, an

auxiliary valve connected to and movable with said main valve for controlling the flow of fluid from the other of said outlets to said common discharge chamber, said main valve having an openmg communicating w1th said main inlet chamber on one side of the valve two subscribing witnesses.

CARL ENGBERG.

Witnesses: JAMES M. BALL,

J.YW. GUST. 

